Procedure Vcheck(job: ch6; var stat: VI_status_type);
   EXTERNAL;
{*USER*
 
See if job named in JOB is one of the jobs in the list of
jobs that are actively connected to this program.  Status
is returned in STAT.
 
*ERROR CODES*
 
VI_SUCCESS - Specified job found on connected job list.
 
VI_NOT_CONNECTED - Specified job not found on list.
 
}